He whispered in the ear of Boris Johnson, who had introduced him to the heart of power: Dominic Cummings, his influential adviser, mastermind of the Brexit campaign, left his post, a government source confirmed on Friday evening.

This is the second start in the hard wing of the Brexiters. 

Dominic Cummings, the very influential and controversial architect of the Brexit campaign, has stepped down as special adviser to British Prime Minister Boris Johnson, a government source confirmed Friday evening, the victim of internal struggles.

The adviser was due to leave before the end of the year, but he was seen leaving Downing Street with his boxes on Friday evening, a government source confirming that he would no longer be officially employed from "mid-December".

Two departures within the hard wing of the Brexiters

His departure follows that of the communications director of 10 Downing Street and his ally in the "Leave" camp, Lee Cain, on Wednesday, a victim of the power struggle within the government.

Both represented the hard wing of the Brexiters, ready for a no-deal exit from the European Union.

Their departure comes during the home stretch of negotiations between London and Brussels in an attempt to reach an agreement on their future trade relations after December 31.

Conservative MPs had opposed Lee Cain's appointment as chief of staff, as had Boris Johnson's fiancée Carrie Symmonds, according to the BBC.

Dominic Cummings had made many enemies, including on the Conservative side, since his appointment when Boris Johnson came to power in July 2019. He played an important role in his early December legislative victory, which won high. hand by the curator.

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Suspected of having been at the origin of a series of dismissals 

The considerable weight he has taken with the Prime Minister, his combative approach and his desire to want to control everything, according to the press, has led to a climate of permanent tension within the executive and the conservatives.

At daggers drawn with the administration, because of his desire to reshape the public service, he is suspected of having been at the origin of a series of dismissals of ministerial assistants, accused of not defending with enough vigor the cause of Brexit.

"Advisors come and go," Transport Minister Grant Shapps said on Sky News Friday morning.

"We will miss him, but we are moving into a different phase," Brexit and the massive test deployment during the pandemic, which Dominic Cummings helped put in place, touching the mark.

"In all governments, you need people who shake things up and come up with ideas, that's what it has been," he added.